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First when i got my m9pro 3g gps was working fine on firmware 06-09-2013 and below custom or stock
never needed to instal time synch app or do fastidious ANY mod to gpsconfig.xml or adding a gps.cfg file.
Normaly what happend is that a gldata.sto file is created in data/gps once the gps start and a lto.dat file
that is stored also there to help to fix faster for next time use.
And once fixed you cold see sat in gpstest.apk or sygic or whatever...
After many reading and investigations about that 'supposely' crappy antenna reported by some forum and 'under a clear blue sky' as an easter miracle or like stupid followed answers from Anna Pipo's factory...
(sorry Anna, really love you sweet but each time i ask; you answer even whorst)
As i said before my investigation lead me to an not well known website called 'xda' 🙂
from there i found a retired gps enginier that i keep personnal contact and help me to
translate NMEA log for me. Of course he doesn't know much about android system and framework
but the gps chip and the gps driver and the antenna is working perfectly, even 'under a bad grey cloud' 🙂
Take a look at com.ppillai.nmea.apk and look at log and viewed sat, i always be between 7 to 10 sat in view.
The guy tell me that gps should lock at this point or it's system relevant (gl engine,framework) cannot be app
because gpstest, androidts gpstest and sygic was working before...
now even compass not always point to the real north away from magnetic sources..doesn't help to get a lock
Problem is in rom: gl engine and/or framework android location services
Due that i doesn't study to MIT in enginering 🙂 i've been pointed to a resumed understandable for common poeple
how gps work for android device:
Due that i replace my touchscreen with supplied vtc_363 i cannot use firmware 06-09-2013 and below custom or stock
anymore cuz the touch is reverted with those kernel that doesn't have proper driver
(it's really kernel, if i use 06-09-2013 rom with 22-10-2013 kernel all is fine but the gps...)
now , no way i've never get a fix again.... blue sky or not
Hey PIPO this tablet cost big money for us, we could have same generic device for half the cost without that gps and 8gb rom. RK3188,32GB,WIFI,BT4.0,GPS SHOULD ALL WORKING it's mainly why i bought this device.
We expect a proper debuged rom from pipo
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